Thomas mcmullin



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rHoMAsMCMuLLIN, or Oscoop, INDIANA, ASSIGNOR '110 HIMSELF AND MILESMENDENHALL, or SAME PLACE? Letters Patent Nb. 81,391, ma Augustv 25,isos.

IMPROVEMENT IN eoU'PLINeBELrs'.

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TO'ALL WHOM vI'l MAY CONCERN: l I

Be it known that I, THOMAS McMULLIN, of Osgood, in the county of Ripley,and State oi' Indiana, have invented certain new and useful Improvementsin. Coupling-Belts; and I do hereby declare that the following is alfull, clear,'and exact description thereof, referencebeing had to theaccompanying drawings, and to the letters I of reference marked thereon,which form apart of this specication, in which-4 Figure 1 represents aview'in perspective of a belt with my improve-d coupling attached.

Figures Zand' 3 are Vviews'in perspective of the coupling detached, andFigure 4' a section, on anrenlarged scale, oi' the coupling as connectedfor operation. lThe o bject of my invention is to pr-ovide a simplev andecient eouplingfor belts, whereby the labor and v loss of time involvedin lacing are obviated, and the belts can bevtightened or slackened asdesired, without cutting them, to which end my improvements lconsist in,attaching to each end of the belt a plate `on which aneccentric-rolleris pivoted, having grooves formed in it immediatelyabove prongs upon the plate, the endoi` the g belt being clamped betweentheV grooves and prongs when the roller is rotated, so as to press uponit, theV plates being connected by4 suitable hooks'and slots.v l

In the Vaecompar'iying drawings, A A represent plates, which are tobeattaehed to the ends'of a belt to be coupled. Rollers, a, are mountedeccentrically'in lugs a formed upon the plates A', having V-shapedgrooves,

Z, cut in them, said `grooves being made in that part of theirperipheries which is furthest from their centres of rotation, or,inother words, at right angles to theirradii of eccentricity.. Pointedprongs, c, are secured to the plates A A', immediatelybeneath the centrolines of 'the rollers a. Plates or levers, d, are secured' to therollers a, opposite to the grooves b, by means of which they can beturned. The plateA is provided with hooks, e, which engage in slots, e',in the plate A', by means of which the two plates are connected afterthey have been clamped to the belt. B represents the belt. v l

The operation of the device is as follows: The rollers a being turned bythe plates CZ -until the grooves b are uppermost,'the plates A A areslipped upon the ends of the belt to be coupled, the-end of the beltpassing over the prongs c and beneath the roller a.

The rollers are then rotated, by means ofthe plates d, until they clampthe ends'ot' the belt between their 4grooves b and the prongs c, byreason of being mounted cceentr-ieallyin theirV bearings. The plates AA( are then connected by the'hooks e and slots i It will be seen that myimprovement furnishes a simple and durable coupling, which will enablethe beltto be readily tightened or slackened as desired, wit-hout thelabor and'loss of time involved in lacing, and without requiring thebelt to be eut.

What I claim, and desireto secure by Letters Patent, is

prongs c, when arranged and operating as and for the purpose set forth.

In testimony that I claim the foregoing as my own, I affix my signature`in presence of two witnesses.

i y THOS. MCMULLIN. Witnesses:

MILES MENDENIIALL, Jr.,l THOMAS GAIN.

The combination of the eccentric-rollers a, furnished with V-shapedgrooves' b, with the plates A A andV

